A processor is also commonly known as microprocessor. It is chip mounted on the motherboard of the computer. This chip is a vital component of the personal computer (PC) along with RAM, memory, and connectors for input and output devices. The PC processor responds to input and processes the instruction that is used to drive the computer. The main functions of the processor are to fetch, decode, execute, and write back. A processor consist of processor registers, arithmetic logic unit, and a control unit. Processors are commonly referred to as Central Processing Unit (CPU) and they are installed in all PCs. However, there are many other processors too that are independently or simultaneously installed on the mother board. These processors perform their operations on some external data source, usually memory. Earlier, PCs primarily consisted of only the CPU. However, in the future, computers are likely to possess hybrid systems i.e multi-core CPUs with parallel core Graphics ...